From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764109AbZEHTHi (ORCPT ); Fri, 8 May 2009 15:07:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763004AbZEHTG7 (ORCPT ); Fri, 8 May 2009 15:06:59 -0400 Received: from mx2.redhat.com ([66.187.237.31]:53135 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763818AbZEHTG5 (ORCPT ); Fri, 8 May 2009 15:06:57 -0400 Message-ID: <4A04829B.7040803@redhat.com> Date: Fri, 08 May 2009 22:06:03 +0300 From: Avi Kivity User-Agent: Thunderbird 2.0.0.21 (X11/20090320) MIME-Version: 1.0 To: Anthony Liguori CC: Gregory Haskins , Marcelo Tosatti , Chris Wright , Gregory Haskins , linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: Re: [RFC PATCH 0/3] generic hypercall support References: <4A0040C0.1080102@redhat.com> <4A0041BA.6060106@novell.com> <4A004676.4050604@redhat.com> <4A0049CD.3080003@gmail.com> <20090505231718.GT3036@sequoia.sous-sol.org> <4A010927.6020207@novell.com> <20090506072212.GV3036@sequoia.sous-sol.org> <4A018DF2.6010301@novell.com> <20090506160712.GW3036@sequoia.sous-sol.org> <4A031471.7000406@novell.com> <20090507233503.GA9103@amt.cnet> <4A043E89.90403@novell.com> <4A044786.2080508@codemonkey.ws> <4A047EDE.2020806@redhat.com> <4A0481AC.7070409@codemonkey.ws> In-Reply-To: <4A0481AC.7070409@codemonkey.ws> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Anthony Liguori wrote: >> ia64 uses mmio to emulate pio, so the cost may be different. I agree >> on x86 it's almost negligible. > > Yes, I misunderstood that they actually emulated it like that. > However, ia64 has no paravirtualization support today so surely, we > aren't going to be justifying this via ia64, right? > Right. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.